195459941 has 2 divisors, whose sum is σ = 195459942. Its totient is φ = 195459940.

The previous prime is 195459899. The next prime is 195459959. The reversal of 195459941 is 149954591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135722500 + 59737441 = 11650^2 + 7729^2 .

It is an emirp because it is prime and its reverse (149954591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195459941 - 2⁶ = 195459877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195459961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97729970 + 97729971.

It is an arithmetic number, because the mean of its divisors is an integer number (97729971).

Almost surely, 2^195459941 is an apocalyptic number.

It is an amenable number.

195459941 is a deficient number, since it is larger than the sum of its proper divisors (1).

195459941 is an equidigital number, since it uses as much as digits as its factorization.

195459941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The square root of 195459941 is about 13980.6988738046. The cubic root of 195459941 is about 580.3445643859.

The spelling of 195459941 in words is "one hundred ninety-five million, four hundred fifty-nine thousand, nine hundred forty-one".